#174070
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.094 254.5), rgb(23, 64, 112).
Aa
White text reads best on this color (10.48:1).
About this color
#174070 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.094 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.018 away. White text reads best on it, at 10.48:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.48:1 |
Values
| HEX | #174070 |
| RGB | rgb(23, 64, 112) |
| HSL | hsl(212, 66%, 26%) |
| OKLCH | oklch(37% 0.094 254.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #174070 | 10.48:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #174070 | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #174070 text on white | 10.48:1 | AAA | Lc 94.0 | Preferred for body text |
| #174070 text on black | 2.00:1 | Fails | Lc -8.5 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF3
oklch(88.5% 0.039 254.3)
-
Step 300
300
#A2C4EE
oklch(81% 0.07 253.9)
-
Step 400
400
#6EA3E6
oklch(70.6% 0.114 254.8)
-
Step 500
500
#458BDE
oklch(63.1% 0.144 254.3)
-
Step 600
600
#2373CC
oklch(55.6% 0.157 254.5)
-
Step 700
700
#1560B1
oklch(49.1% 0.146 254.6)
-
Step 800
800
#154F8F
oklch(42.8% 0.121 254.3)
-
Step 900
900 (this color)
#174070
oklch(37% 0.094 254.5)
-
Step 950
950
#102743
oklch(27% 0.06 254.6)
#174070 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #294472 | 0.023 |
| Deuteranopia (no green cones) | #1A3C6F | 0.012 |
| Tritanopia (no blue cones) | #004B52 | 0.072 |
| Achromatopsia (no color) | #3F3F3F | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174070
#174070
oklch(37% 0.094 254.5)
- #583800
#583800
oklch(37% 0.078 73.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #174070, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.018
- Marine Blue #01386A ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.050
- Light Navy #155084 ΔE 0.054
- Cobalt #1E488F ΔE 0.056
- Charcoal #264653 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #174070 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.